<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id="root"></div>
    <script src="./vue3基础源码/vue3.js"></script>
    <script>
        const app = Vue.createApp({
            template:`<child @eve-one="handleMain"/>`,
            methods:{
                handleMain(){
                    alert("有效");
                }
            }
        });

        app.component("child",{
            template:`<div @click="handleClick">123</div>`,
            setup(props,context){
                const {attrs,emit,slots} = context;
                console.log(emit);
                const handleClick = () => {
                    emit("eveOne");
                }
                return {handleClick};
            }
        })



        const vm = app.mount("#root");
    </script>
</body>
</html>